On the one I have to look at, I don't see a way to do this. Looks like swivel hole is part of the gas block and swivel would have to be cut out. Hole is also horizontal, I'm guessing you'd want a vertical hole for QD. Have you considered rail or clamp-on options?
Just cut off the original sling loop: use a cut off wheel in a Dremel tool or power drill. The hole should be the right size; if not or too tight, just run a slightly larger drill bit thru the hole.
You can cut off the butt loop too and keep the original threaded stud with bluing that matches the rifle.
Or just bend the loops out, that's how they were originally installed.